The GPR stock has an oil finish. Wipe it down with denatured alcohol. That will lighten the color somewhat. Then lightly go over the stock with 220 grit wet-dry sand paper which will lighten the color further. Don't sand into the low spots to avoid worsening those low spots. Then wipe the stock down with Ballistol.
Replace the Lyman double set triggers with the Davis Deerslayer double set trigger. The stock trigger is okay if shooting with the rear trigger set.
The sear spring is way, way, way to stiff/strong for shooting with just the front trigger (unset). Replace it with a lighter spring. Some ink pen springs are of the correct diameter but most are too large.
The wood on my GPR is not perfect but I can live with it. Mine is an accurate Flintlock.
